User summary adapted from the publisher website:
dK2 is the second edition of the dK System, 100% compatible.
dK System, is the simplest, most unleashed, most modular, funniest (and squarest), most heroic and most fantastic role-playing game system. Based on the success of the Open Gaming License for the d20 System, the dK System offer a simplification of the game mechanics with much more flexibility.
It takes into account the feedback gathered from the players community: more flexible, more fun.